The 1756-L72 ControlLogix 5570 Processor Module from Rockwell Automation is a high-performance PLC/PAC controller designed for industrial automation systems requiring fast deterministic control, scalable architecture, and strong system diagnostics.
It is widely used in manufacturing, process industries, and infrastructure automation, offering a balanced combination of processing power, memory capacity, and modern serviceability features such as USB programming and SD card storage.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-L72 |
| Series | ControlLogix 5570 |
| Processor Type | PLC / PAC Controller |
| User Memory | 4 MB |
| I/O Memory | ~0.98 MB |
| Nonvolatile Memory | 1 GB SD card (expandable up to 2 GB) |
| Programming Port | USB 2.0 |
| Maximum I/O Capacity | Up to 128,000 digital / 4,000 analog |
| Controller Tasks | Up to 32 tasks |
| Programs per Task | Up to 100 programs |
| Backplane Current (5.1V DC) | ~0.8 A |
| Power Dissipation | ~2.5 W |
| Programming Software | RSLogix 5000 / Studio 5000 |
| Battery / Energy Storage | 1756-ESMCAP module |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~0.25 kg |
Physical Dimensions
- Size (H × W × D): 133 × 51 × 145 mm
The compact single-slot design ensures easy installation into standard ControlLogix chassis systems while maintaining high-density control capability.
Recommended Related Models
For system expansion or upgrade paths, the L72 is commonly paired with:
- 1756-L71 / 1756-L73 ControlLogix CPUs
- 1756-EN2T EtherNet/IP communication module
- 1756-ENBT Ethernet bridge module
- 1756-CNB ControlNet bridge module
- 1756-IB16 / 1756-OB16 digital I/O modules
Popular Allen-Bradley ControlLogix Models
Within the same ecosystem, widely deployed controllers include:
- 1756-L61 / L62 legacy ControlLogix CPUs
- 1756-L63 / L64 high-memory 5560 controllers
- 1756-L71 / L72 / L73 5570 generation controllers
- 1756-L7SP GuardLogix safety partner modules
- 1756-EN2T high-speed Ethernet modules
These controllers form a scalable automation platform widely used across global industrial sectors.
